CN103067878B - A kind of group call releasing method and device - Google Patents
A kind of group call releasing method and device Download PDFInfo
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Abstract
The invention discloses a kind of group call releasing method and device, in order to realize the group calling release under a kind of new TD-LTE wideband multimedia aggregated structure, reduce the Signalling exchange in group calling release flow process, and then reduce group calling release delay, improve group calling release efficiency.A kind of group call releasing method provided by the invention comprises: the cluster mobility session management entity TMSE belonging to called subscriber equipment UE, receives the group calling releasing request from called UE; TMSE belonging to called UE sends group calling releasing request message to dispatch server Server, wherein carries the mark of described called UE.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a group call release method and apparatus.
Background
The information industry department of 12/28/2000 formally releases a 'digital trunking mobile communication system' to the outside, and recommends that a trunking uses two systems, namely terrestrial trunked radio (TETRA) and Integrated Digital Enhanced Networks (iDEN). In the following years, Code Division Multiple Access (CDMA) technology-based open cluster architecture (GOTA) and global system for mobile communications (GT) 800, which were independently developed in China, were introduced.
With the rapid development of the mobile internet and the popularization of the TD-LTE technology, the demand for broadband mobile communication is more and more obvious, and the cluster system is also developing towards the IP system architecture, broadband data, and the like. In 2010, CCSA has formally approved research report of TD-LTE based trunking communication system, and three implementation schemes based on TD-LTE broadband multimedia trunking are proposed in the report.
The most typical service in a trunking system is a group call service, i.e. a user may initiate a call to a specific group at a certain time, the call being in a half duplex mode. In a broadband multimedia system, a cluster can provide not only voice group calling but also services such as visual group calling for users. The group calling features that only one person is allowed to talk at any time, the speaking party obtains the uplink resource, other users are in answering state, the system allocates a downlink shared channel to each cell involved in the group, and the users in the group in the cell all monitor the shared channel in real time. Therefore, only one uplink and one shared downlink are provided at any moment in the cluster group calling process, and the frequency spectrum resources are utilized more efficiently than those of the public network. The half-duplex group call has another characteristic that the speaking right allows the operations of applying, releasing, preempting, queuing and the like, and the management process of the speaking right is closely related to the priority of the user. In addition, the group call setup delay is one of the key indicators of the trunking call, and any trunking system needs to satisfy the system characteristics of fast access. The group call setup delay is defined as the time from when a calling party presses a push-to-talk (PTT) button until a called party hears the calling party's voice.
The TETRA system is a european standard, the trunking function is the most powerful, but the system equipment and the user equipment are expensive, although the air interface is open to the outside, other interfaces inside the system are all secret, and the interoperability between equipment merchants is not high. The iDEN system is a unique standard, and the system standard is not published externally.
In a domestic narrow-band digital trunking system, such as a GT800 based on GSM and a GOTA system based on CDMA, because a base station needs to be uniformly controlled by a base station controller, it cannot directly communicate with a core network, so that signaling interaction in a group call establishment process is increased, and call establishment delay is increased.
Among three TD-LTE broadband multimedia trunking schemes proposed by the CCSA, the first scheme modifies the air interface to achieve the purpose of enhancing the group call performance, the second scheme proposes to implement the broadband trunking by using a push-to-talk over cellular (Poc) service to perform an enhancement mode, and the third scheme uses a multicast and broadcast service (MBMS) joint transmission mode to achieve the enhancement of the group call performance based on the Poc scheme. The three schemes have some disadvantages in the group call performance scheme, and although the first scheme optimizes the air interface, as the public network architecture of the TD-LTE core network is adopted, multiple interactions are needed among all devices of the core network in the group call establishment process, which is not beneficial to shortening the group call establishment delay; the second scheme and the third scheme both use standard Poc service to perform enhancement mode, and because the Poc service has limited optimization space due to flow limitation. Although the third scheme employs the MBMS joint transmission scheme to optimize the air interface, the overall scheme optimization is not obvious.
Disclosure of Invention
The embodiment of the invention provides a group call release method and a group call release device, which are used for realizing group call release under a novel TD-LTE broadband multimedia cluster architecture, reducing signaling interaction in a group call release process, further reducing group call release time delay and improving group call release efficiency.
The group call release method provided by the embodiment of the invention comprises the following steps:
a cluster mobility session management entity TMSE to which called user equipment UE belongs receives a group call release request from the called UE;
the TMSE to which the called UE belongs sends a group call release request message to a scheduling Server, wherein the group call release request message carries the identification of the called UE.
The group call release method provided by the embodiment of the invention comprises the following steps:
a scheduling Server receives a group call release request message sent by a cluster mobility session management entity TMSE to which called user equipment UE belongs, wherein the group call release request message carries an identifier of the called UE;
and when the called UE has the right to initiate the organization release request, the scheduling Server sends a group call release request message to all TMSE in the group call.
The group call release method provided by the embodiment of the invention comprises the following steps:
a cluster mobility session management entity (TMSE) to which calling User Equipment (UE) belongs receives a group call release request message from the TMSE to which called UE belongs, which is sent by a scheduling Server;
and the TMSE to which the calling UE belongs sends a group calling context release request to an evolved node B eNB to which the calling UE belongs.
The group call release device provided by the embodiment of the invention comprises:
the first receiving and processing unit is used for receiving a group call release request from called User Equipment (UE);
and the first sending and processing unit is used for sending a group call release request message to the scheduling Server, wherein the group call release request message carries the identification of the called UE.
The group call release device provided by the embodiment of the invention comprises:
a second receiving and processing unit, configured to receive a group call release request message sent by a cluster mobility session management entity TMSE to which a called UE belongs, where the group call release request message carries an identifier of the called UE;
and the second sending and processing unit is used for sending a group call release request message to all TMSE in the group call when the called UE has the right to initiate the organization release request.
The group call release device provided by the embodiment of the invention comprises:
a third receiving and processing unit, configured to receive a group call release request message sent by the scheduling Server from a TMSE to which the called UE belongs;
and the third sending and processing unit is used for sending the group call context release request to the evolved node B eNB to which the calling UE belongs.
The communication system provided by the embodiment of the invention comprises:
a cluster mobility session management entity TMSE to which called user equipment UE belongs, which is used for receiving a group call release request from the called UE and sending a group call release request message to a scheduling Server, wherein the group call release request message carries an identifier of the called UE;
the scheduling Server is used for receiving a group call release request message sent by a TMSE to which the called UE belongs, and sending the group call release request message to all TMSEs in the group call when the called UE has the right to initiate the organization release request;
the TMSE to which the calling UE belongs is used for receiving a group call release request message sent by the scheduling Server from the TMSE to which the called UE belongs and sending a group call context release request to the evolved node B eNB to which the calling UE belongs.
In the embodiment of the invention, a cluster mobility session management entity TMSE to which called UE belongs receives a group call release request from the called UE; the TMSE to which the called UE belongs sends a group call release request message to a scheduling Server, wherein the group call release request message carries the identification of the called UE. Therefore, group calling release under a novel TD-LTE broadband multimedia cluster architecture is realized on the TMSE side to which the called UE belongs, signaling interaction in a group calling release flow is reduced, group calling release time delay is further reduced, and group calling release efficiency is improved.
In the embodiment of the invention, a scheduling Server receives a group call release request message sent by a cluster mobile session management entity TMSE to which called user equipment UE belongs, wherein the group call release request message carries an identifier of the called UE; and when the called UE has the right to initiate the organization release request, the scheduling Server sends a group call release request message to all TMSE in the group call. Therefore, on the scheduling Server side, the group call release under a novel TD-LTE broadband multimedia cluster architecture is realized, the signaling interaction in the group call release process is reduced, the group call release time delay is further reduced, and the group call release efficiency is improved.
In the embodiment of the invention, a cluster mobility session management entity TMSE to which calling user equipment UE belongs receives a group call release request message from the TMSE to which called UE belongs, which is sent by a scheduling Server; and the TMSE to which the calling UE belongs sends a group calling context release request to an evolved node B eNB to which the calling UE belongs. Therefore, group calling release under a novel TD-LTE broadband multimedia cluster architecture is realized at the TMSE side to which the calling UE belongs, signaling interaction in a group calling release flow is reduced, group calling release delay is further reduced, and group calling release efficiency is improved.
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Fig. 1 is a schematic network architecture diagram of a TD-LTE broadband multimedia cluster according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a group call release flow on a TMSE side to which a called UE belongs according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a group call release flow at a dispatch Server side according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a group call release flow on a TMSE side to which a calling UE belongs according to an embodiment of the present invention;
fig. 5 is a schematic diagram of an overall flow of group call release according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a group call release apparatus on a TMSE side to which a called UE belongs according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a group call release apparatus on the dispatch Server side according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a group call release apparatus on a TMSE side to which a calling UE belongs according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a group call release method and a group call release device, which are used for realizing group call release under a novel TD-LTE broadband multimedia cluster architecture, reducing signaling interaction in a group call release process, further reducing group call release time delay and improving group call release efficiency.
As shown in fig. 1, the network architecture of the TD-LTE broadband multimedia cluster according to the embodiment of the present invention includes a User Equipment (UE), an evolved node b (eNB), a cluster mobility session management entity (TMSE), a Home Subscriber Server (HSS), a scheduling Server (Server), a scheduling console, and an operation maintenance console.
The core network under the system architecture adopts a centralized idea, the functions of core network equipment are unified by TMSE, and the TMSE directly controls all TD-LTE base station equipment under the jurisdiction so as to reduce signaling interaction in the group call establishment process.
The following gives a functional introduction of each network entity:
the user equipment refers to equipment directly operated by a cluster user, and provides cluster services, data services and the like for the user. According to the form of connection to the system, there are two types of devices, wireless user equipment and wired user equipment. According to the function, the wireless user equipment is divided into common wireless user equipment and wireless scheduling user equipment with a scheduling function. According to the external shape, the wireless user equipment can be divided into handheld user equipment, a vehicle-mounted station and the like, wherein the handheld user equipment is a portable device commonly used by cluster users and provides various services for users in a mobile environment; a vehicle-mounted station is a user device mounted on a vehicle such as a vehicle or a ship.
The eNB in the system adds functions required for realizing cluster services on the basis of a TD-LTE system base station (eNodeB), and the functions comprise: transparently passing signaling for the trunking service between the wireless user equipment and the TMSE, allocating radio resources for the wireless user equipment and the trunking service, passing downlink data of the trunking service received from the TMSE to the wireless user equipment, etc.
The TMSE is a main network element of a core network portion of the TD-LTE trunking system, and the TMSE first has a function of a Mobility Management Entity (MME) in the LTE system, that is, functions of mobility management, access control, Evolved Packet System (EPS) session management, and the like are realized; secondly, the TMSE also has functions similar to a Packet Data Network (PDN) gateway (PGW) in the LTE system, that is, functions responsible for allocating an IP address to the user equipment, performing quality of service (QoS) control, providing an interface with an external data network, and the like, and importantly, the TMSE also has functions related to a trunking service, including a translation function of implementing a trunking call signaling between the user equipment and the TMSE and an SIP protocol between the TMSE and a dispatch server, and a media processing function of the trunking call, for example, copying and distributing downlink media data to different base stations, and the like.
In addition, the TMSE also needs to have functions such as collecting charging data related to the trunking service.
Preferably, one TMSE entity integrates the MME, SGW and PGW functions in the LTE network, and simplifies the flow in the existing LTE network by an internal method, so as to shorten the time required by the existing flow.
When the network scale is large, wide coverage is realized in a multi-TMSE networking mode.
The HSS is a database used for storing the subscription information of the user and also has the function of an authentication center. To support the cluster service, it is necessary to add related functions to the existing HSS function, for example: management of group subscription data, etc.
The dispatching server is mainly used for finishing dispatching service logic control of cluster group calling, single calling, emergency calling, speaking right management, cluster service authority management and the like, and can realize functions (aiming at a multi-TMSE scene) of media surface data copying, forwarding and the like.
Optionally, when the voice call interworking with the external network is required, the dispatch server has a function of a voice access gateway or a relay gateway.
The scheduling server can manage the cluster user data.
The dispatching desk mainly provides a man-machine operation visual interface, presents information and triggers dispatching services, and can generate an alarm in case of an emergency call.
The operation maintenance platform supports a local operation maintenance platform and a centralized network management, and the specific function comprises a safety function for managing the operation maintenance user authority; a function of configuration modification of office data of equipment network planning; the signaling tracking function is convenient for operation and maintenance and developers to position and analyze the calling process; the method carries out unified fault management on the equipment and provides tools for alarm collection, display, inquiry, fault detection, fault diagnosis and fault processing. In addition, the network element software management function used for daily equipment maintenance operation management function and system software upgrading provides telephone traffic and signaling measurement, service quality measurement, availability measurement, throughput measurement and switching function measurement for each network element, provides a basis for system performance analysis and grasps network operation conditions at any time. The operation maintenance platform also provides an operation log, an access safety log, a system operation log, a network element event notification and an alarm log for the operation of the user access equipment, so that the problem location is facilitated. A service provisioning platform needs to be supported for the HSS device.
The operation maintenance platform can communicate with network elements such as a base station, a TMSE, an HSS, a dispatching desk and the like in the system, so as to realize the sending of the operation maintenance command and the receiving of the response message of each network element to the operation command. Because the IP networking technology is adopted, only the operation maintenance platform is shown in figure 1, and the connection relation with each network element is simplified and displayed.
The system comprises a terminal, a base station, a cluster mobility session management entity (TMSE), a scheduling server, a database, a scheduling station and an operation maintenance part based on the network architecture of the TD-LTE broadband multimedia cluster shown in figure 1. The core network under the system architecture adopts a centralized thought, the functions of core network equipment are uniformly realized by a cluster mobility session management entity (TMSE), and the TMSE directly controls all TD-LTE base station equipment under the jurisdiction so as to reduce signaling interaction in the group calling process.
The group call release method based on the TD-LTE broadband multimedia trunking system architecture shown in FIG. 1 allows a user with control right to initiate a group call release process. The following description is made from different network element sides, respectively.
Referring to fig. 2, a group call release method provided on the TMSE side to which the called UE belongs includes:
s101, a cluster mobility session management entity TMSE to which called UE belongs receives a group call release request from the called UE;
s102, the TMSE to which the called UE belongs sends a group call release request message to a scheduling Server, wherein the group call release request message carries the identification of the called UE.
Preferably, the TMSE to which the called UE belongs receives the group call release request from the called UE through the eNB to which the called UE belongs.
Preferably, the method further comprises:
and the TMSE to which the called UE belongs receives the group calling context release response message from the TMSE to which the calling UE belongs and sent by the scheduling Server, and sends the group calling context release response message to the called UE.
Preferably, the TMSE to which the called UE belongs sends the group call context release response message to the called UE through the eNB to which the called UE belongs.
Referring to fig. 3, a group call release method provided in a dispatch Server includes:
s201, a scheduling Server receives a group call release request message sent by a cluster mobility session management entity (TMSE) to which a called User Equipment (UE) belongs, wherein the group call release request message carries an identifier of the called UE;
s202, when the called UE has the right to initiate the organization release request, the scheduling Server sends a group call release request message to all TMSE in the group call.
Preferably, the method further comprises:
and after receiving the group calling context release response message sent by the TMSE to which the calling UE belongs, the scheduling Server sends the group calling context release response message to the TMSE to which the called UE belongs.
Referring to fig. 4, a group call release method provided at the TMSE side to which the calling UE belongs includes:
s301, a cluster mobility session management entity (TMSE) to which calling User Equipment (UE) belongs receives a group call release request message from the TMSE to which called UE belongs, wherein the group call release request message is sent by a scheduling Server;
s302, the TMSE to which the calling UE belongs sends a group calling context release request to the evolved node B eNB to which the calling UE belongs.
Preferably, the method further comprises:
and deleting the downlink air interface bearer of the user in the group by the eNB to which the calling UE belongs.
Preferably, the method further comprises:
and after deleting the downlink air interface bearer of the user in the group, the eNB to which the calling UE belongs sends a group calling context release response message to the TMSE to which the calling UE belongs.
Preferably, the method further comprises:
and after receiving the group calling context release response message sent by the eNB to which the calling UE belongs, the TMSE to which the calling UE belongs sends the group calling context release response message to the scheduling Server.
Preferably, the method further comprises:
and the TMSE to which the calling UE belongs judges whether the calling UE has services except the group calling release after receiving the group calling release request message, if so, an E-UTRAN wireless access bearer E-RAB release process is initiated to the eNB to which the calling UE belongs, and otherwise, an S1 connection release process is initiated to the eNB to which the calling UE belongs.
Preferably, the method further comprises:
when the TMSE to which the calling UE belongs initiates an E-RAB release process, the eNB to which the calling UE belongs sends an RRC reconfiguration message to the calling UE, and when the TMSE to which the calling UE belongs initiates an S1 connection release process, the eNB to which the calling UE belongs sends a Radio Resource Control (RRC) release message to the calling UE.
The whole flow description is given below with reference to the attached drawings.
Referring to fig. 5, a group call initiator UE1 (calling UE) initiates a group call release during a group call, where UE1 has a talk right, UE2 (called UE) has a control right of a trunking session (a user with the control right may initiate a group call release), and a flow of the group call release initiated by a trunking user is as follows:
1. the UE2 initiates a group call release request, where the message carries the content of the initiating user identifier, the group identifier, and the like, which initiates the group call release. This message is sent by NAS direct transfer to TMSE2.
2. The TMSE2 sends a call group call release request (BYE) message (carrying a user identity etc. initiating the call release) to the dispatch Server.
3. The scheduling Server judges whether the UE2 user has the authority to initiate group call release according to the locally stored control authority and talk authority information, and if so, the scheduling Server sends a BYE message to all TMSE in the group call.
4. After receiving the BYE message, the TMSE1 sends a group call context release request to the eNB1 to which the TMSE1 belongs.
Then, the following step 5 is performed, and simultaneously the following steps 6, 7, 8 may be sequentially performed.
5. After receiving the group call context release request, the eNB1 deletes the downlink air interface bearer of the users in the group;
immediately after this step 5 has been performed, the following steps 9, 10, 11, 12 may be performed in sequence.
6. TMSE1 judges whether UE1 with speaking right has other services, if yes, it initiates the release process of the evolved UMTS terrestrial radio access network (E-UTRAN) radio access bearer (E-UTRA radio access bearer), otherwise, it initiates the release process of S1 interface signaling.
7. eNB1 sends a Radio Resource Control (RRC) reconfiguration message to UE1 when TMSE1 initiates an E-RAB release procedure, and eNB1 sends an RRC release message to UE1 when TMSE1 initiates an S1 connection release procedure.
8. When TMSE1 initiates the E-RAB release procedure, UE1 sends an RRC reconfiguration response message to eNB 1; alternatively, when TMSE1 initiates the S1 connection release procedure, the UE1 sends an RRC release response to the eNB 1.
9. After deleting the downlink air interface bearer of the user in the group, the eNB1 sends a group call context release response message to the TMSE 1.
10. TMSE1 sends a 200OK group call context release response message to the scheduling Server.
11. The scheduling Server sends a 200OK group call context release response of the SIPBYE to TMSE2.
12. TMSE2 sends a group call context release response to UE 2.
A description of corresponding devices and systems is given below.
Referring to fig. 6, a group call release apparatus on the TMSE side to which a called UE belongs includes:
a first receiving and processing unit 61, configured to receive a group call release request from a called user equipment UE;
a first sending processing unit 62, configured to send a group call release request message to the scheduling Server, where the group call release request message carries an identifier of the called UE.
Preferably, the first receiving and processing unit 61 receives a group call release request from the called UE through an eNB to which the called UE belongs.
Preferably, the first receiving and processing unit 61 is further configured to:
receiving a group call context release response message sent by a scheduling Server from a TMSE (TMSE) to which calling UE belongs;
the first sending processing unit 62 is further configured to: and sending the group call context release response message to the called UE.
Preferably, the first sending processing unit 62 sends the group call context release response message to the called UE through the eNB to which the called UE belongs.
Referring to fig. 7, a group call release apparatus on a dispatch Server side includes:
a second receiving and processing unit 71, configured to receive a group call release request message sent by a cluster mobility session management entity TMSE to which a called UE belongs, where the group call release request message carries an identifier of the called UE;
a second sending processing unit 72, configured to send a group call release request message to all TMSEs in the group call when the called UE has the right to initiate the organization release request.
Preferably, the first and second liquid crystal films are made of a polymer,
the second receiving and processing unit 71 is further configured to receive a group call context release response message sent by a TMSE to which the calling UE belongs;
the second sending processing unit 72 is further configured to send a group call context release response message to the TMSE to which the called UE belongs.
Referring to fig. 8, a group call release apparatus on the TMSE side to which a calling UE belongs includes:
a third receiving and processing unit 81, configured to receive a group call release request message sent by the scheduling Server from the TMSE to which the called UE belongs;
and a third sending and processing unit 82, configured to send a group call context release request to an eNB to which the calling UE belongs.
Preferably, the first and second liquid crystal films are made of a polymer,
the third receiving and processing unit 81 is further configured to receive a group call context release response message sent by the eNB to which the calling UE belongs;
the third sending processing unit 82 is further configured to send a group call context release response message to the scheduling Server.
Preferably, the third receiving and processing unit 81 is further configured to determine, after receiving the group call release request message, whether the calling UE has a service other than the group call release, if so, initiate an E-UTRAN radio access bearer E-RAB release procedure to the eNB to which the calling UE belongs, otherwise, initiate an S1 connection release procedure to the eNB to which the calling UE belongs.
To sum up, a communication system provided in an embodiment of the present invention includes:
a cluster mobility session management entity TMSE to which called user equipment UE belongs, which is used for receiving a group call release request from the called UE and sending a group call release request message to a scheduling Server, wherein the group call release request message carries an identifier of the called UE;
the scheduling Server is used for receiving a group call release request message sent by a TMSE to which the called UE belongs, and sending the group call release request message to all TMSEs in the group call when the called UE has the right to initiate the organization release request;
the TMSE to which the calling UE belongs is used for receiving a group call release request message sent by the scheduling Server from the TMSE to which the called UE belongs and sending a group call context release request to the evolved node B eNB to which the calling UE belongs.
Preferably, the first and second liquid crystal films are made of a polymer,
the TMSE to which the calling UE belongs is also used for sending the group calling context release response message to the scheduling Server after receiving the group calling context release response message sent by the eNB to which the calling UE belongs;
the scheduling Server is also used for sending the group calling context release response message to the TMSE to which the called UE belongs after receiving the group calling context release response message sent by the TMSE to which the calling UE belongs;
the TMSE to which the called UE belongs is also used for receiving a group calling context release response message sent by the scheduling Server from the TMSE to which the calling UE belongs and sending the group calling context release response message to the called UE.
Preferably, the system further comprises an eNB to which the called UE belongs, and the TMSE to which the called UE belongs receives the group call release request from the called UE through the eNB to which the called UE belongs; and the TMSE to which the called UE belongs sends the group call context release response message to the called UE through the eNB to which the called UE belongs.
Preferably, the system further includes an eNB to which the calling UE belongs, and configured to delete the downlink air interface bearer of the user in the group after receiving the group call context release request sent by the TMSE to which the calling UE belongs.
Preferably, the eNB to which the calling UE belongs is further configured to send a group call context release response message to the TMSE to which the calling UE belongs after deleting the downlink air interface bearer of the user in the group.
Preferably, the TMSE to which the calling UE belongs is further configured to determine whether the calling UE has services other than the group call release after receiving the group call release request message, if so, initiate an E-UTRAN radio access bearer E-RAB release procedure to the eNB to which the calling UE belongs, otherwise, initiate an S1 connection release procedure to the eNB to which the calling UE belongs.
Preferably, when the TMSE to which the calling UE belongs initiates the E-RAB release process, the eNB to which the calling UE belongs is further configured to send an RRC reconfiguration message to the calling UE, and when the TMSE to which the calling UE belongs initiates the S1 connection release process, the eNB to which the calling UE belongs is further configured to send a radio resource control RRC release message to the calling UE.
In summary, the present invention provides a group call release procedure of a broadband multimedia cluster under a TD-LTE broadband multimedia cluster architecture. The invention considers how to ensure the normal operation of other current services on the premise of releasing the group call normally if the group call called user has other services. The broadband multimedia trunking system can provide higher bandwidth and better user experience than the narrowband digital trunking, for example, can provide a visual group call service. The novel TD-LTE broadband multimedia trunking system architecture based on the invention is simpler and easier to implement.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (13)
1. A method for group call release, the method comprising:
a cluster mobility session management entity (TMSE) to which calling User Equipment (UE) belongs receives a group call release request message from the TMSE to which called UE belongs, which is sent by a scheduling Server;
the TMSE to which the calling UE belongs sends a group calling context release request to an evolved node B eNB to which the calling UE belongs; wherein,
and the TMSE to which the calling UE belongs judges whether the calling UE has services except the group calling release after receiving the group calling release request message, if so, an E-UTRAN wireless access bearer E-RAB release process is initiated to the eNB to which the calling UE belongs, and otherwise, an S1 connection release process is initiated to the eNB to which the calling UE belongs.
2. The method of claim 1, further comprising:
and deleting the downlink air interface bearer of the user in the group by the eNB to which the calling UE belongs.
3. The method of claim 1, further comprising:
and after deleting the downlink air interface bearer of the user in the group, the eNB to which the calling UE belongs sends a group calling context release response message to the TMSE to which the calling UE belongs.
4. The method of claim 3, further comprising:
and after receiving the group calling context release response message sent by the eNB to which the calling UE belongs, the TMSE to which the calling UE belongs sends the group calling context release response message to the scheduling Server.
5. The method of claim 1, further comprising:
when the TMSE to which the calling UE belongs initiates an E-RAB release process, the eNB to which the calling UE belongs sends an RRC reconfiguration message to the calling UE, and when the TMSE to which the calling UE belongs initiates an S1 connection release process, the eNB to which the calling UE belongs sends a Radio Resource Control (RRC) release message to the calling UE.
6. A group call release device, the device comprising:
a third receiving and processing unit, configured to receive a group call release request message sent by the scheduling Server from a TMSE to which the called UE belongs;
a third sending and processing unit, configured to send a group call context release request to an evolved node b eNB to which the calling UE belongs; wherein,
and the third receiving and processing unit is further configured to, after receiving the group call release request message, determine whether the calling UE has a service other than the group call release, if so, initiate an E-UTRAN radio access bearer E-RAB release procedure to the eNB to which the calling UE belongs, otherwise, initiate an S1 connection release procedure to the eNB to which the calling UE belongs.
7. The apparatus of claim 6,
the third receiving and processing unit is further configured to receive a group call context release response message sent by an eNB to which the calling UE belongs;
the third sending and processing unit is further configured to send a group call context release response message to the scheduling Server.
8. A communication system, the system comprising:
a cluster mobility session management entity TMSE to which called user equipment UE belongs, which is used for receiving a group call release request from the called UE and sending a group call release request message to a scheduling Server, wherein the group call release request message carries an identifier of the called UE;
the scheduling Server is used for receiving a group call release request message sent by a TMSE (TMSE) to which the called UE belongs, and sending the group call release request message to all TMSEs in the group call when the called UE has the right to initiate the group call release request;
the TMSE to which the calling UE belongs is used for receiving a group call release request message sent by the scheduling Server from the TMSE to which the called UE belongs and sending a group call context release request to an evolved node B eNB to which the calling UE belongs; wherein,
the TMSE to which the calling UE belongs is also used for judging whether the calling UE has services except the group call release after receiving the group call release request message, if so, initiating an E-UTRAN wireless access bearer E-RAB release process to the eNB to which the calling UE belongs, otherwise, initiating an S1 connection release process to the eNB to which the calling UE belongs.
9. The system of claim 8,
the TMSE to which the calling UE belongs is also used for sending the group calling context release response message to the scheduling Server after receiving the group calling context release response message sent by the eNB to which the calling UE belongs;
the scheduling Server is also used for sending the group calling context release response message to the TMSE to which the called UE belongs after receiving the group calling context release response message sent by the TMSE to which the calling UE belongs;
the TMSE to which the called UE belongs is also used for receiving a group calling context release response message sent by the scheduling Server from the TMSE to which the calling UE belongs and sending the group calling context release response message to the called UE.
10. The system of claim 8, further comprising an eNB to which the called UE belongs, wherein the TMSE to which the called UE belongs receives the group call release request from the called UE through the eNB; and the TMSE to which the called UE belongs sends the group call context release response message to the called UE through the eNB to which the called UE belongs.
11. The system of claim 8, further comprising an eNB to which the calling UE belongs, configured to delete the downlink air interface bearer of the user in the group after receiving the group call context release request sent by the TMSE to which the calling UE belongs.
12. The system of claim 11 wherein the eNB to which the calling UE belongs is further configured to send a group call context release response message to the TMSE to which the calling UE belongs after deleting the downlink air interface bearers of the users in the group.
13. The system of claim 8, wherein the eNB to which the calling UE belongs is further configured to send an RRC reconfiguration message to the calling UE when the TMSE to which the calling UE belongs initiates the E-RAB release procedure, and wherein the eNB to which the calling UE belongs is further configured to send a radio resource control RRC release message to the calling UE when the TMSE to which the calling UE belongs initiates the S1 connection release procedure.
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